Coffee-urn



H. STROHBACH.

COFFEE URN.

APPLICATION FILED SEPT. 30, 1919.

1,349,236, Patented Aug. 10, 1920.

' 2 SHEETS-SHEET I.

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% INVENTOR BY 2 ATTORNEY H. STROHBACH.

COFFEE URN.

APPLICATION FILED SEPT. 30. l9|9.

Patented Aug. 10, 1920.

2 SHEETS-SHEET 2.

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UNITED STATES nnmzrsrnommcn, on new zo'nx; n. Y.

COFFEEURN.

Specification of Letters Patent.

Patented Aug. 10, 1920.

Appli tion filedieptember 30; 1919. Serial No. 327 636.

To all whom it may. concern.

Be it known that I, HENRX Sznnonnaorr, a citizen of, the United. States, and. a resident of New York, in.the county of Kings and State of New York, have invented certain new and useful. Improvements in Colise- Urns, of'which the following is a specification.

Thepresent invention relates to improve ments in coffee urns. and the like, and. particularly to that class which isv used in. hotels, restaurants, and. generally in places where coffee is-made inlange quantities.

One of the objects of the invention is to provide an urn, havingv means wheneby the too strong. extract, settling on the bottom of the liquid-holding receptacle me. be conveniently mingled with the codes, tiereby producing an. even. mass.

Another object oi the invention. is to pro vide a coffee urn, having. a1} effective water heating. means,. which quickly, and com veniently produces steam for forcing the hot water up: to the top-otthzeground coffee holding vessel,.whene. it pencolates through the coffee.

A further object; otfi the invention .is to produce a construction. fen hol ding the coffee or the 1ike,.w.hi1eit is being steeped, which. is readily remonable from the. urn and is ot such character that it may be conveniently cleaned. and used. a number of times.

A. still further object, of. the. invention is to generall. improve theconstruction. of pt them for manufacture on a commercial. scale, that is to. say to. malpe them so simple in construction thatthey are capable of being produced at a cost not .ex ceediing. that oft similar contrivances heretofore in. use.

With these and] other objects in. view, which will. more. fully appear as the a u e of the invention is better understoodthe same consists in. the combination, arrangement. and constrnctinn of parts hereinafter described, pointed out in) the appended claims and illustratediimtheac penying drawings; it being" under cod t at many changes may be made in t e size and proportion of the several parts and details of construction within the scope of the appended claims without departing from the spirit or sacrificing any of the advantages of the invention.

One of the many possible embodiments of the invention is illustrated in the accompanying drawings, in which Figure l is a. front elevation of. a coffee urn constructed. in accordance with the present invention; Fig. 2 is a top plan. view of the same; Fig, 3 is a sectionitaken on line 3-3 of. Fig. 1.; anclFi-g. 4. is a, section taken on line 47-4. of Fig. 2,;on a larger scale.

In the drawings, the numeral 10 indicates an upright. boiler, as usual in constructions of. this type, said boiler being made of any suitable material ada ted to hold, water and being, preferably, cy indrical in configuration. The boiler is covered by an ondinary 11d 11,. which is removable but forms a substantial airand water-tight closure. Adjacent the upper end of the boiler there is formed within. the. same, a. flange 12, so porting an. extract holding receptacle 1%, that. is spaced. firomthe, boiler and; is of, a height substantially onehalf of that of said boiler. :heboiler is supported. in any suitable manner, for. instance on legs. 14,, between which is disposed a heater 15,.preferably a gas. heater, the. ante rising, therefrom striking. the bottom 16 of the boiler. Water is led into the boiler though a pipe 17 communicating with the boiler adjacent its bottom. a. valve. or faucet 18 being insorted into said pipe for obvious reasons. Below the bottom of the boiler is disposed a. preheater 19,. in. the form of an. endless pipe, which communicat through at least two openings 20 with t e interior of the boiler.

The top edge of the extract-holding, rcceptacle 1 3 ismade in. the formofa 21, on. which rests the outwardly turned flange 22 of. a preferably conical sol 23, thela'tter. holding ground co es of: the, like. The. bottom 24 of thisvessel is nrzfile of! some textile fahric, such as cheese clo for a 1aijltlrainer, that is held in position y a c 1,pi1n,rin2 5;r in on aninwar'dl turned an e 26 iin his iwer edge. of thh vessel 23. perforated 27, seated; in a groove 28v the vessel za, serves. O p e? ventlthg ground: ages fromiising int vesse. u', v .e. cred. was. This dish is di posed suitab l' istance above the strainer bottom 24 and is removable, so as to permit of emptying of said vessel and also of removing the bottom thereof, when it is intended to clean the latter or to replace the same.

A pipe 29 leads from a point adjacent the bottom of the boiler up to the open top of the vessel 23, the major portion of said pipe being disposed within the boiler and a short section thereof, denoted by the numeral 30, being located outside of the boiler. In this short section is inserted a valve 31. Above the normal water level, denoted in the drawings by the numeral 32, there communicates with the boiler a safety valve 33, for automatically preventing the steam pressure in the boiler from rising above a predetermined point. As usual in the construction of these urns, there is provided a water gage 34, connected at its lower end with the boiler adjacent the bottom of the latter, its upper end being ta ped into the boiler a substantial distance a ove the normal water level therein.

The extract-holding receptacle 13 is provided with a delivery pipe 35, that extends through the boiler a short distance above its bottom and is provided at its outer extremity with a draw-off faucet 36. In order to indicate the height of the extract within the receptacle 13, there is provided a gage 37, the lower extremity of which is connected by a pipe 38 with the delivery pipe 35. The upper extremity of the gage 37 is connected to a coupling 39, that leads to the steam space of the boiler. Faucets 40 and 41 at the u per and lower ends of the ga e 37 control t 1e passage of fluid therethroug For the purpose of emptying the boiler, there is an outlet openin 42 provided in the bottom thereof, said openin being closed by a cover 43 of any suitaile construction.

The operation of this device is as follows z-lVater is admitted into the boiler through the pipe 17, the valve 18 being turned to closing position when the roper level has been reached. Ground coti ee, or like material, is placed into the vessel 23, the disk 27 being forced into place. The burner is then put into operation, its flame striking the pre-heater 19 and the bottom of theboiler, thereby bringing, in time, the water to boiling point, The re-heater is continuously and automatical y filled and emptied, the boiling water in the pre-heater squirtin out through the openings 20, and water 0 lower temperature flowing into said pre-heater. When the water is at boiling point, the valve 31 is opened, and, as soon as there is enough steam pressure in the boiler, water is forced up through the {pipe 29 into the s ace above the vessel 23, OVM ing through 1; e same and extracting the es sence from the coffee or other material. The extract collects in the receptacle 13. it is to be observed that the uppermost portion of the pipe 29 is disposed substai'itially horizontally. Due to this arrangement, the boiling water spreads out over the surface of the vessel 23, it being distributed substantially even over the top surface of the coffee or other material therein. The extract is allowed to rise to a level below that of the vessel 23.

As the extract is allowed to stand, it happens sometimes that it is stronger at the bottom of the receptacle than at the upper levels. In order to obtain an extract that is even throughout, the mass must be stirred up. This may be accomplished by opening the faucet 41 and permitting steam to pass through the gage 37 and pipe 38 into the receptacle 13.

The level. of the extract in the receptacle 13 can always be ascertained by looking at the gage 37. i

It is to be observed that, since the delivery pipe 35 is wholly disposed within the boil ing or hot water in the boiler, the coffee extract therein is always maintained at the temperature of the water in the boiler.

As above mentioned, the endless pipe 19 communicates through at leasttwo openings with the boiler. The purpose of this arrangement is to produce a noiseless urn, the water jets issuing from the said pipe being silenced by the arrangement described, which would not be the case if only a single opening were provided.

What I claim is:-

1. In an urn, the combination with a boiler, of an extract-holding receptacle therein, a coffee-holding vessel extending into said receptacle, a pipe leading from a point adjacent the bottom of said boiler above said vessel, a delivery pipe leading from the bottom of said receptacle, and a gage connected at its lower end with said delivery pipe and at its upper end with the steam space of the boiler.

2. In an urn, the combination with a boiler, of an extract-hblding receptacle therein, a delivery pipe leading from the bottom of said receptacle, and a cock-controlled pipe connected atits lower end with said delivery pipe and at its upper end with the steam space ofthe boiler.

Signed at New York, in the county of New York and State of New York, this 8th day of Sep, A. D. 1919.

HENRY STROHBACH. 

